What quantity of 75% acid solution must be mixed with 25% solution to produce 720 ml of a 50% solution

Step-by-step explanation:

and

both volumes combined makes the last solution...

and

now...

0.5x+0.5y=0.75x+0.25y

0.25y=0.25x

x=y

it means both volumes are same

so volume of acid must be 720/2=360mL

plug that number in to x and y

if u didnt get how i got the answer...comment me

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step-by-step explanation:

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the answer is option a you would get more money.it would be $250.

step-by-step explanation:

for option b 200/2=100=50% 100/2=50=25% 50/5=10=5% it would be $220